Super hot busbar reason:El cheapo inverter!
So when we took the cover off of the positive bus bar, it had melted where the inverter was connected. We almost had a fire, thankfully we were in the van and my nose caught it.
It was difficult to pull the cover off the bus bar. When finally pulled off, it turns out it was melted at the cable for the inverter. So prior to turning on the inverter, Hubby checked all the connections. But since they were tightened up two weeks ago, none were loose. The other, 1000w inverter (with a 600w load for several minutes) ran fine with absolutely no heat at the bus.
Last night, when I smelled the hot wires I didn't feel the inverter, nor did I notice if the fan on the inverter was running as it normally does under load (I'll blame the two margaritas I had at dinner). So after checking everything else today, we moved on to the inverter. We turned it on, then the air conditioner. The inverter got very hot fast and I noticed that the inverter fan was not running, even with a 1300w load.
So all my components are Victron except for the cheap Chinese Amazon inverter. Not a good idea, I could have lost my van.
We sometimes leave the dogs in the van with the a/c on. I shudder to think that this could have happened if I wasn't in there to smell the hot wires.
So I'll buy a new bus bar, a better inverter from a reputable company,replace the cables and get a temperature probe for the BMV-712.
So, suggestion for an inverter vendor and brand? The inverter needs to be 24v, 3500/7000w (3000/6000w will work).
Thank you guys for all your help!